.input{
	width:400px;
	height:50px;
	vertical-align:middle;
}
.sure{
	width:80px;
	height:57px;
	vertical-align:middle;
	font-size:20px;
	font-weight:bold;
}
.btn{
	color:blue;
}
.item{
	float:left;
	color:grey;
}
span{
	visibility: hidden;
}